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Student Conference on Research and Development (SCOReD)

作者： Rina Azlin Razali Mohamed Othman System and Networking Universiti Tenaga Nasional Kajang Malaysia Faculty of Computer Science and Information Technology Universiti Putra Malaysia Kajang Malaysia

ISBN: (纸本)9781467395731

system-on-chip (SoC) architectures are getting communication-bound both from physical wiring and distributed computation point of view. Wiring delays are becoming dominating over gate delays, which favors short links. The larger SoC the more probably the overall computation is heterogeneous and localized rather than evenly balanced over the chip. These two factors motivate Network-on-Chip (NoC) that brings the techniques developed for macro-scale, multi-hop networks into a chip. But due to shrinkage of transistors and integration of billions of transistors in a single chip, has made NoC no longer suitable to cater for high latency and demand of bandwidth in a multicore processor environment. Thus they have introduce HONoC (hybrid optical network on chip) to cater for the high latency and demand in bandwidth. There are many research that focus on the area of architecture, routing algorithm and switching strategies in order to make the communication run optimally in HONoC. The purpose of this paper is to evaluate main problems in HONoC. From the evaluation, three main problems has been identified which are path collisions, low resource usage and high power consumption in HONoC.

关键词： Routing Delays Power demand Heuristic algorithms Optical buffering Throughput Bandwidth

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RETRACTED ARTICLE: Horizontal global solar radiation estimation using hybrid SVM-firefly and SVM-wavelet algorithms: a case study

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Natural Hazards 2015年第3期102卷 1613-1614页

作者： Mohammadi, Kasra Shamshirband, Shahaboddin Danesh, Amir Seyed Zamani, Mazdak Sudheer, Ch. Department of Mechanical and Industrial Engineering University of Massachusetts Amherst USA Department of Computer System and Technology Faculty of Computer Science and Information Technology University of Malaya Kuala Lumpur Malaysia Department of Software Engineering Faculty of Computer Science and Information Technology University of Malaya Kuala Lumpur Malaysia Department of Computer Science Kean University Union USA Department of Civil and Environmental Engineering ITM University Gurugaon India

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Optimization of neural network using cuckoo search for the classification of diabetes

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Journal of Computational and Theoretical Nanoscience 2015年第12期12卷 5755-5758页

作者： Abubakar, Adamu I. Shuib, Liyana Chiroma, Haruna Department of Information System Faculty of Computer Science and IT University Malaya Kuala Lumpur Malaysia Department of Artificial Intelligence Faculty of Computer Science and IT University of Malaya Kuala Lumpur Malaysia Department of Information Systems Faculty of Information and Communication Technology International Islamic University of Malaysia Kuala Lumpur Malaysia

Available records show that over 80% of the patient suffering from diabetes die from heart or blood diseases. Total cure for the diabetes is currently not available. In this paper, we proposed diabetes classifier based on the cuckoo search algorithm (CS) and Neural Network (NN). The weights and bias of the NN was trained using the CS to deviate from being stuck in local minima. The high dimension of the features in our dataset triggered the study to extract the critical features using principal component analysis. The extracted features were used to built a classifier based on the NN and the CS for classifying potential diabetes patients. The propose diabetes classifier performance was compared to the classifiers built based on artificial bee colony and genetic algorithm. Simulation results show that the proposed approach converges faster to the optimum solution than the comparative classifiers. Comparative study of the approach proposed and previous methods, further proved the effectiveness of our method. The classifier have the capability of automatically diagnosing possible diabetic patients. This can be help to the physicians in taken decision about the status of a diabetic patient. Copyright © 2015 American Scientific Publishers.

关键词： Principal component analysis

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RETRACTED ARTICLE: Potential of support vector regression for solar radiation prediction in Nigeria

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Natural Hazards 2015年第2期77卷 1055-1068页

作者： Olatomiwa, Lanre Mekhilef, Saad Shamshirband, Shahaboddin Petkovic, Dalibor Power Electronics and Renewable Energy Research Laboratory (PEARL) Department of Electrical Engineering Faculty of Engineering University of Malaya Kuala Lumpur Malaysia Department of Electrical and Electronic Engineering Federal University of Technology Minna Nigeria Department of Computer System and Technology Faculty of Computer Science and Information Technology University of Malaya Kuala Lumpur Malaysia Department for Mechatronics and Control Faculty of Mechanical Engineering University of Niš Nis Serbia

In this paper, the accuracy of soft computing technique in solar radiation prediction based on series of measured meteorological data (monthly mean sunshine duration, monthly mean maximum and minimum temperature) taking from Iseyin meteorological station in Nigeria was examined. The process, which simulates the solar radiation with support vector regression (SVR), was constructed. The inputs were monthly mean maximum temperature (Tmax), monthly mean minimum temperature (Tmin) and monthly mean sunshine duration ( $$ \bar{n} $$ ). Polynomial and radial basis functions (RBF) are applied as the SVR kernel function to estimate solar radiation. According to the results, a greater improvement in estimation accuracy can be achieved through the SVR with polynomial basis function compared to RBF. The SVR coefficient of determination R 2 with the polynomial function was 0.7395 and with the radial basis function, the R 2 was 0.5877.

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Forwarding mechanism using prioritized forwarders for opportunistic routing

Forwarding mechanism using prioritized forwarders for opport...

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Asia-Pacific Network Operations and Management Symposium (APNOMS)

作者： Taku Yamazaki Ryo Yamamoto Takumi Miyoshi Takuya Asaka Yoshiaki Tanaka Department of Communications and Computer Engineering Waseda University Shinjuku-ku Tokyo Japan Global Information and Telecommunication Institute Waseda University Shinjuku-ku Tokyo Japan Graduate School of Informatics and Engineering The University of Electro-Communications Chofu-shi Tokyo Japan College of Systems Engineering and Science Shibaura Institute of Technology Saitama-shi Saitama Japan Faculty of System Design Tokyo Metropolitan University Hino-shi Tokyo Japan Waseda Daigaku Shinjuku-ku Tokyo JP

ISBN: (纸本)9781467390576

In ad hoc networks, backoff-based OR (opportunistic routing) protocols, which autonomously selects a forwarder among the potential forwarders based on a random backoff time, have been proposed. However, each potential forwarder must wait for the backoff time to avoid packet collisions among receivers. In addition, the terminal density strongly affects the performance since the backoff-based OR protocols improve the performance by using multiple terminals. In this paper, we propose a novel OR protocol called PRIOR (prioritized forwarding for opportunistic routing). In PRIOR, a terminal called prioritized forwarder, which forwards packets without using a backoff time, is selected among neighbours. In addition, we propose a hop-by-hop retransmission control that performs the retransmission terminal selection on the basis of a neighbour relation with the PFs. Moreover, we introduce an explicit acknowledgement mechanism on the basis of the difference of hop counts to alleviate the bad effect of the retransmission control in dense environments. Finally, we evaluate PRIOR in comparison with conventional backoff-based OR protocols in computer simulation.

关键词： Receivers Routing Ad hoc networks Routing protocols Maintenance engineering Wireless communication

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SOA-based framework for home and building automation systems (HBAS)

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International Journal of Smart Home 2014年第5期8卷 197-206页

作者： Perumal, Thinagaran Ramli, Abd Rahman Leong, Chui Yew Department of Computer Science Faculty of Computer Science and Information Technology Universiti Putra Malaysia Malaysia Department of Computer and Communication System Engineering Faculty of Engineering Universiti Putra Malaysia Malaysia

Home and building automation systems (HBAS) today are categorized by plethora of data formats, communication platforms and software services accessible via heterogeneous embedded devices. These heterogeneous embedded devices characterized a building into a data intensive entity, generating numerous data and complex control information, brings a much heavy load to the HBAS. Consequently, this leads to interoperation difficulties among those devices for information exchange and operation management. In this paper, a Service Oriented Architecture (SOA) based framework that leveraged by services is proposed to manage HBAS efficiently by reducing their workload during joint execution of tasks. The proposed framework consists of several layers dedicated for services interwoven by Event-Condition-Action (ECA) oriented decision mechanism for managing heterogeneous embedded devices. The proposed framework is viable and highly efficient to be deployed for HBAS with limited computing resources. © 2014 SERSC.

关键词： Interoperability

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Hybrid Clustered Peer-Assisted DASH-SVC system

Hybrid Clustered Peer-Assisted DASH-SVC System

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International Conference on computer and Information technology (CIT)

作者： Ran Dubin Ofer Hadar Yariv Freifeld Aviv Ruham Amit Dvir Nissim Harel Refael Barkan Communication System Eng. Ben-Gurion University Beer Sheva Israel Computer Science Department Ariel University Israel The Faculty of Computer Sciences Holon Institute of Technology Israel

ISBN: (纸本)9781509001552

Dynamic Adaptive Streaming over HTTP (DASH) standard was designed to improve quality of experience (QoE) by enabling video distribution at different quality levels according to the clients' network conditions. Moreover, DASH is compatible with the H.264 Scalable Video Coding (SVC) technology. In Content Delivery Networks (CDNs)-P2P hybrid approach, users can fetch contents from the CDN edge network, the P2P network, or from both networks. In this paper, we present a Hybrid CDN-P2P-SVC-DASH system, mainly to improve user quality of experience. Our system is based on clustering the peers to improve the user download time. The simulation results show that the clusters improve the QoE, reduce the start-time and reduce the load on the tracker. We also found that relatively small clusters can achieve most of the potential benefits engrained in the CDN-P2P hybrid approach.

关键词： Streaming media Peer-to-peer computing Clustering algorithms Media Servers Bandwidth Static VAr compensators

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Open source software adaptation in Africa: Is a matter of inferior or cheap is not quality?

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International Journal of Open Source Software and Processes 2014年第1期5卷 1-15页

作者： Bakar, Abubakar Diwani Md Sultan, Abu Bakar Zulzalil, Hazura Din, Jamilah Department of Information System Faculty of Computer Science and Information Technology University Putra Malaysia Serdang Selangor Malaysia

The African continent has long benefited from adopting OSS in its private and public organizations that have changed their way of development, the use and how to acquire proprietary software. This frequency of adaptation does not appear to be in balance with the contribution to the OSS community. Using views from experienced software practitioners working in different organizations across two African countries it has been observed that neglected infrastructure, a wide availability of proprietary software and misconceptions of a clear meaning of Open Source Software across Africa have been an obstacle towards the participation in the OSS technology in the global network. Copyright © 2014, IGI Global.

关键词： Open source software

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Genetic Bayesian ARAM for Simultaneous Localization and Hybrid Map Building

Genetic Bayesian ARAM for Simultaneous Localization and Hybr...

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IEEE Symposium Series on Computational Intelligence (SSCI)

作者： Wei Hong Chin Chu Kiong Loo Naoyuki Kubota Yuichiro Toda Faculty of Computer Science and Information Technology University of Malaya Kuala Lumpur Malaysia Faculty of System Design Tokyo Metropolitan University Tokyo Japan Shuto Daigaku Tokyo Hachioji Tokyo JP

This paper presents a new framework for mobile robot to perform localization and build topological-metric hybrid map simultaneously. The proposed framework termed as Genetic Bayesian ARAM consists of two main components: 1) Steady state genetic algorithm (SSGA) for self-localization and occupancy grid map building and 2) Bayesian Adaptive Resonance Associative Memory (ARAM) for topological map building. The proposed method is validated using a mobile robot. Result show that Genetic Bayesian ARAM capable of generate hybrid map online and perform localization simultaneously.

关键词： Robot sensing systems Measurement Buildings Robot kinematics Bayes methods Genetics

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A Review of the Applications of Bio-inspired Flower Pollination Algorithm

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Procedia computer Science 2015年 62卷 435-441页

作者： Haruna Chiroma Nor Liyana Mohd Shuib Sanah Abdullahi Muaz Adamu I. Abubakar Lubabatu Baballe Ila Jaafar Zubairu Maitama Federal College of Education (Technical) Department of Computer Science Gombe Nigeria University of Malaya Department of Artificial Intelligence Kuala Lumpur Malaysia University of Malaya Department of Information System Kuala Lumpur Malaysia Bayero University Kano Faculty of Computer Science and Information Technology Department of Software Engineering Kano Nigeria International Islamic University Malaysia Faculty of Information and Communication Technology Kuala Lumpur Malaysia Bayero University Kano Faculty of Engineering Department of Machatronics Engineering Kano Nigeria Bayero University Kano Faculty of Computer Science and Information Technology Department of Information Technology Kano Nigeria

The Flower Pollination Algorithm (FPA) is a novel bio-inspired optimization algorithm that mimics the real life processes of the flower pollination. In this paper, we review the applications of the Single Flower Pollination Algorithm (SFPA), Multi-objective Flower Pollination Algorithm an extension of the SFPA and the Hybrid of FPA with other bio-inspired algorithms. The review has shown that there is still a room for the extension of the FPA to Binary FPA. The review presented in this paper can inspire researchers in the bio-inspired algorithms research community to further improve the effectiveness of the PFA as well as to apply the algorithm in other domains for solving real life, complex and nonlinear optimization problems in engineering and industry. Further research and open questions were highlighted in the paper.

关键词： Flower Pollination Algorithm Single Objective Flower Pollination Algorithm Multi-objective Flower Pollination Algorithm Hybrid Flower Pollination Algorithm

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